One important “pupil” who paid Fuchs an early visit was Qian Sanqiang. In 1959 Qian was the designated mastermind of Mao’s A-bomb program. In July of that year, Qian made his way to East Germany, where he met with Fuchs at length. (H. Terry Hawkins, now a senior fellow at Los Alamos, told Stillman in 2006, “I read this report in an unclassified publication, that this meeting took place shortly after Fuchs returned to East Germany. Fuchs gave Qian information that greatly assisted the Chinese program.” Also see http://www.oldatlanticlighthouse.wordpress.com/category/klaus-fuchs.) During those long summer days of 1959, Fuchs gave Qian a full tutorial on the design and operation of Fat Man. In all likelihood, he also added his thoughts on the role of radiation pressure in thermonuclear weapons.